NEW YORK -- A small electrical fire underneath an X-ray machine at New York City's LaGuardia Airport has caused a brief evacuation of a terminal.

Three Port Authority of New York and New Jersey police officers have been treated for smoke inhalation after the fire under a Transportation Security Administration machine.

Port Authority spokesman Steve Coleman says the fire was reported inside Terminal C on Sunday evening and was quickly extinguished. He says the terminal was briefly evacuated to allow smoke to dissipate and the screening of passengers resumed within an hour.